摘要：A robust reliability method for stability analysis and reliability-based stabilization of time-delay dynamic systems with uncertain but bounded parameters is presented by treating the uncertain parameters as interval *** performance function used for robust reliability analysis is defined by a delayindependent stability *** design of robust controllers is carried out by solving a reliability-based optimization problem in which the control cost satisfying design requirements is *** kind of treatment makes it possible to achieve a balance between the reliability and control cost in the design of controller when uncertainties must be taken into *** the method,a robust reliability measure of the degree of stability of a time-delay uncertain system can be provided,and the maximum robustness bounds of uncertain parameters such that the time-delay system to be stable can be *** the procedures are based on the linear matrix inequality approach and therefore can be carried out *** effectiveness and feasibility of the proposed method are demonstrated with two practical *** is shown by numerical simulations and comparison that it is meaningful to take the robust reliability into account in the control design of uncertain systems.

摘要：For the first-order integrating processes with long delay, a Modified Smith Predictor (MSP) was analyzed when the control signal saturated. If the MSP controller has no anti-windup scheme, the saturation effectively chops off the control input resulting in performance deterioration. Thus, a simple and effective anti-windup scheme, without an additional parameter, is designed for the MSP. Simulation results illustrate that the proposed method may achieve good performance under the nominal and model uncertainty cases.

摘要：This paper focuses on the problem of stability analysis and controller design for a class of delay systems based on networked control systems. By introducing some free matrix variables, some criteria for stability analysis and observer-based control law design can be obtained by the solving of linear matrix inequalities. A numerical example is also offered to prove the effectiveness of the proposed method.

摘要：The variable structure controller is designed for a class of nonlinear uncertain time-delay system by using robust observer, and incorporating H-infinity control technique, the controller can guarantee the H-infinity performance of sliding mode dynamics and satisfy the reaching condition, which also does not require uncertainties to satisfy matching condition and linear boundary condition. The simulation example is given to illustrate the method.

摘要：Based on an appropriate Lyapunov function,this paper analyzes the design of a delay-dependent robust H_(∞)state feedback control,with a focus on a class of non-linear uncertainty linear time-delay systems with input delay using linear matrix *** the condition that the nonlinear uncertain functions are gain bounded,a sufficient condition dependent on the delays of the state and input is presented for the existence of H_(∞)*** proposed controller not only stabilized closed-loop uncertain systems but also guaranteed a prescribed H_(∞)norm bound of closed-loop transfer matrix from the disturbance to controlled *** solving a linear matrix inequation,we can obtain the robust H_(∞)*** example is given to show the effectiveness of the proposed method.

摘要：This article concerns a coupled LMIs approach to delay-dependent observer-based output feedback stabilizing controller design for linear continuous-time systems with multiple state delays. The advantage of our proposed delay-dependent coupled LMIs criterion lies in that: ( 1 ) it can optimize one of multiple time delays with others selected properly, and at the same time, the feedback-gain and observer-gain can be obtained, respectively. (2) it is less conservative than the existing delay-independent ones in the literature. Algorithm to solve the coupled LMIs is also given. Numerical examples illustrate the effectiveness of our method. Keywords delay-dependent criterion - time-delay system - Multiple time-delay - Observer-based controller - Linear matrixinequality (LMI)